Preliminary discussion on the relationship between post-collisional setting and volcanic reservoirs for oil and gas around Kalamaili suture zone
Wu Xiaoqi1,2 Liu Deliang1 Li Zhensheng3
1.School of Earth and Space Sciences|University of Science and Technology of China|Hefei 230026；2.Research Institute of Petroleum Exploration and Development| PetroChina|Beijing 100083； 3.College of Resources and Environmental Engineering|Hefei University of Technology|Hefei 230009
After Kalamaili oceanic basin closed，the bilateral landmasses were loosely connected，and intercontinental remnant oceanic basin developed，which indicated the existence of softcollisionExtensive volcanism developed in postcollisional period around Kalamaili suture zoneOil and gas exploration in recent years revealed plentiful oil and gas resources in these postcollisional volcanic rocksThis study analysed the main controlling factors of several volcanic reservoirs around Kalamaili suture zone，and the results indicate that postcollisional volcanism and underpalting of mantlederived magmas around Kalamaili suture zone had promoted the thermal evolution of organic matters in the hydrocarbon source rocks； postcollisional tectonic evolution of this suture zone was tightly connected with the distribution of Carboniferous hydrocarbon source rocks，the generation and evolution of volcanic reservoir space，and the development of cap rocks，as well as the migration and accumulation of oil and gas by faults，unconformities and reversion structuresThese were favorable for generation of volcanic reservoirs for oil and gasVolcanic reservoirs around Kalamaili suture zone have bright future for explorationThe reservoirs in LudongWucaiwan area mainly locate in the weathered crust in the top Carboniferous，and the most favorable district is centralwest Dinan uplift，while the remnant tectonic highs are also favorable.
. Preliminary discussion on the relationship between post-collisional setting and volcanic reservoirs for oil and gas around Kalamaili suture zone[J]. Chinese Journal of Geology, 2010, 45(04): 1098-1110.